Italian Language/punctuation

Can you please tell me how the following sentence should be punctuated. Should I write:

“No, questo non è il mio cappello.”

or

“No. Questo non è il mio cappello.”

I am trying to determine if the adverb “no” should be followed by a comma or by a period.

Can you also please tell me if I am correct in thinking that “no” is being used as an “adverb of negation” in the above sentence.

Would the same apply to the adverb “Sì” as in: “Sì, questo è il mio cappello”.

Thank you very much.

Sincerely,
Rich

AnswerDear Rich,

actually you can write either “No, questo non è il mio cappello” with the comma after the adverb of negation or “No. Questo non è il mio cappello” with the full stop after the adverb of negation, depending on whether you want to show a slight pause (comma) or to mark a definite pause (period/full stop).